diff options
Diffstat (limited to 'target/linux/ar71xx/image/lzma-loader/src/loader.c')
| -rw-r--r-- | target/linux/ar71xx/image/lzma-loader/src/loader.c | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/target/linux/ar71xx/image/lzma-loader/src/loader.c b/target/linux/ar71xx/image/lzma-loader/src/loader.c deleted file mode 100644 index 794c4b6285..0000000000 --- a/target/linux/ar71xx/image/lzma-loader/src/loader.c +++ /dev/null @@ -1,264 +0,0 @@ -/* - * LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards - * - * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org> - * - * Some parts of this code was based on the OpenWrt specific lzma-loader - * for the BCM47xx and ADM5120 based boards: - * Copyright (C) 2004 Manuel Novoa III (mjn3@codepoet.org) - * Copyright (C) 2005 Mineharu Takahara <mtakahar@yahoo.com> - * Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su> - * - * The image_header structure has been taken from the U-Boot project. - * (C) Copyright 2008 Semihalf - * (C) Copyright 2000-2005 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - */ - -#include <stddef.h> -#include <stdint.h> - -#include "config.h" -#include "cache.h" -#include "printf.h" -#include "LzmaDecode.h" - -#define AR71XX_FLASH_START 0x1f000000 -#define AR71XX_FLASH_END 0x1fe00000 - -#define KSEG0 0x80000000 -#define KSEG1 0xa0000000 - -#define KSEG1ADDR(a) ((((unsigned)(a)) & 0x1fffffffU) | KSEG1) - -#undef LZMA_DEBUG - -#ifdef LZMA_DEBUG -# define DBG(f, a...) printf(f, ## a) -#else -# define DBG(f, a...) do {} while (0) -#endif - -#define IH_MAGIC_OKLI 0x4f4b4c49 /* 'OKLI' */ - -#define IH_NMLEN 32 /* Image Name Length */ - -typedef struct image_header { - uint32_t ih_magic; /* Image Header Magic Number */ - uint32_t ih_hcrc; /* Image Header CRC Checksum */ - uint32_t ih_time; /* Image Creation Timestamp */ - uint32_t ih_size; /* Image Data Size */ - uint32_t ih_load; /* Data Load Address */ - uint32_t ih_ep; /* Entry Point Address */ - uint32_t ih_dcrc; /* Image Data CRC Checksum */ - uint8_t ih_os; /* Operating System */ - uint8_t ih_arch; /* CPU architecture */ - uint8_t ih_type; /* Image Type */ - uint8_t ih_comp; /* Compression Type */ - uint8_t ih_name[IH_NMLEN]; /* Image Name */ -} image_header_t; - -/* beyond the image end, size not known in advance */ -extern unsigned char workspace[]; -extern void board_init(void); - -static CLzmaDecoderState lzma_state; -static unsigned char *lzma_data; -static unsigned long lzma_datasize; -static unsigned long lzma_outsize; -static unsigned long kernel_la; - -#ifdef CONFIG_KERNEL_CMDLINE -#define kernel_argc 2 -static const char kernel_cmdline[] = CONFIG_KERNEL_CMDLINE; -static const char *const kernel_argv[] = { - NULL, - kernel_cmdline, - NULL, -}; -#endif /* CONFIG_KERNEL_CMDLINE */ - -static void halt(void) -{ - printf("\nSystem halted!\n"); - for(;;); -} - -static __inline__ unsigned long get_be32(void *buf) -{ - unsigned char *p = buf; - - return (((unsigned long) p[0] << 24) + - ((unsigned long) p[1] << 16) + - ((unsigned long) p[2] << 8) + - (unsigned long) p[3]); -} - -static __inline__ unsigned char lzma_get_byte(void) -{ - unsigned char c; - - lzma_datasize--; - c = *lzma_data++; - - return c; -} - -static int lzma_init_props(void) -{ - unsigned char props[LZMA_PROPERTIES_SIZE]; - int res; - int i; - - /* read lzma properties */ - for (i = 0; i < LZMA_PROPERTIES_SIZE; i++) - props[i] = lzma_get_byte(); - - /* read the lower half of uncompressed size in the header */ - lzma_outsize = ((SizeT) lzma_get_byte()) + - ((SizeT) lzma_get_byte() << 8) + - ((SizeT) lzma_get_byte() << 16) + - ((SizeT) lzma_get_byte() << 24); - - /* skip rest of the header (upper half of uncompressed size) */ - for (i = 0; i < 4; i++) - lzma_get_byte(); - - res = LzmaDecodeProperties(&lzma_state.Properties, props, - LZMA_PROPERTIES_SIZE); - return res; -} - -static int lzma_decompress(unsigned char *outStream) -{ - SizeT ip, op; - int ret; - - lzma_state.Probs = (CProb *) workspace; - - ret = LzmaDecode(&lzma_state, lzma_data, lzma_datasize, &ip, outStream, - lzma_outsize, &op); - - if (ret != LZMA_RESULT_OK) { - int i; - - DBG("LzmaDecode error %d at %08x, osize:%d ip:%d op:%d\n", - ret, lzma_data + ip, lzma_outsize, ip, op); - - for (i = 0; i < 16; i++) - DBG("%02x ", lzma_data[ip + i]); - - DBG("\n"); - } - - return ret; -} - -#if (LZMA_WRAPPER) -static void lzma_init_data(void) -{ - extern unsigned char _lzma_data_start[]; - extern unsigned char _lzma_data_end[]; - - kernel_la = LOADADDR; - lzma_data = _lzma_data_start; - lzma_datasize = _lzma_data_end - _lzma_data_start; -} -#else -static void lzma_init_data(void) -{ - struct image_header *hdr = NULL; - unsigned char *flash_base; - unsigned long flash_ofs; - unsigned long kernel_ofs; - unsigned long kernel_size; - - flash_base = (unsigned char *) KSEG1ADDR(AR71XX_FLASH_START); - - printf("Looking for OpenWrt image... "); - - for (flash_ofs = CONFIG_FLASH_OFFS; - flash_ofs <= (CONFIG_FLASH_OFFS + CONFIG_FLASH_MAX); - flash_ofs += CONFIG_FLASH_STEP) { - unsigned long magic; - unsigned char *p; - - p = flash_base + flash_ofs; - magic = get_be32(p); - if (magic == IH_MAGIC_OKLI) { - hdr = (struct image_header *) p; - break; - } - } - - if (hdr == NULL) { - printf("not found!\n"); - halt(); - } - - printf("found at 0x%08x\n", flash_base + flash_ofs); - - kernel_ofs = sizeof(struct image_header); - kernel_size = get_be32(&hdr->ih_size); - kernel_la = get_be32(&hdr->ih_load); - - lzma_data = flash_base + flash_ofs + kernel_ofs; - lzma_datasize = kernel_size; -} -#endif /* (LZMA_WRAPPER) */ - -void loader_main(unsigned long reg_a0, unsigned long reg_a1, - unsigned long reg_a2, unsigned long reg_a3) -{ - void (*kernel_entry) (unsigned long, unsigned long, unsigned long, - unsigned long); - int res; - - board_init(); - - printf("\n\nOpenWrt kernel loader for AR7XXX/AR9XXX\n"); - printf("Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>\n"); - - lzma_init_data(); - - res = lzma_init_props(); - if (res != LZMA_RESULT_OK) { - printf("Incorrect LZMA stream properties!\n"); - halt(); - } - - printf("Decompressing kernel... "); - - res = lzma_decompress((unsigned char *) kernel_la); - if (res != LZMA_RESULT_OK) { - printf("failed, "); - switch (res) { - case LZMA_RESULT_DATA_ERROR: - printf("data error!\n"); - break; - default: - printf("unknown error %d!\n", res); - } - halt(); - } else { - printf("done!\n"); - } - - flush_cache(kernel_la, lzma_outsize); - - printf("Starting kernel at %08x...\n\n", kernel_la); - -#ifdef CONFIG_KERNEL_CMDLINE - reg_a0 = kernel_argc; - reg_a1 = (unsigned long) kernel_argv; - reg_a2 = 0; - reg_a3 = 0; -#endif - - kernel_entry = (void *) kernel_la; - kernel_entry(reg_a0, reg_a1, reg_a2, reg_a3); -} |